Canada



v A. L. DAVENPORT AND A. J. JAMES.

LATCH. APPLICATION FI LED DEC 13, I919. 1,356,604. Patented Oct. 26,1920.

717301 75611 Ewes.

ALPHA LEON DAVENPORT Ann ARTHUR Jonn'JAMns, or VANCOUVER, BRITISH 1 COLUMBIA, CANADA.

I LATCH. v

Specification of Letters iatent. PiatentedOct; 26,

7 Application filed December13, 191's. serial-no. 344,699.

devise a lock capable of being applied to a door in a quick, simple, inexpensive manner and which does away with the mortlslng of the door and enables the lock to be fitted 1n place without the necessity of skilled labor.

We attain this object by the construction illustrated in the accompanying drawings 1n which- Figure 1 is a side view of the lock.

Fig. 2 is a front end view.

F ig.-3 is a longitudinal sectional elevation.

Fig. 4 is a perspective view of the lock bolt.

Fig. 5 is a detail view of the operating tongue.

Fig. 6 is a view of the handle splndle.

Fig. 7 is an end view of the spindle showing the spindle groove or keyway.

Similar figures of reference indicate sumlar parts throughout the severalviews.

The lock consists of a tubular cylinder 1 having on its outer end a flange 2 formed preferably as shown in Fig. 2 which flange is provided with holes 3 through which screws may be passed to secure the lock to the door. The cylinder is closed at its lnner end by a cap 4. which may be secured in place by any suitable means and slidably mounted in the bore of the cylinder is the lock bolt 5 the outer end of which projects normally beyond the flange 2 while its inner end is recessed as at 6 and bears on the end of a tension spring 7 disposed between the end of the bolt and the cap 4.

About midlength the cylinderis cut away on both sides to form along its longitudinal center line an elliptical opening, indicated by the numeral 8, the upper edge of th1s opening being restricted 1n length and extending through the upper peripheral surface of the cylinder as at 9 and from the ends of the opening 9 slots 10 and 11 are formed in the upper wall of the cyhnderpf sufficient length to permit a key with which thebolt is provided to travel therein as the bolt isoperated to lock or unlock the door. A similar slot 12 is provided in the lower wall of the cylinder, as indicated inFig. 3. The lock bolt 5 is also provided with an elliptical opening 13 and keys 14: and 15 adapted to fit slidably the slots 10, 11 and 12 respectively, being also slotted in its upper and lower surfaces as at 16 and 17 to permit movement of the operating tongue member. 18 indicates a tonguethe ends of 'which are mounted in the slots 16 and 17,

which tongue is providedwith side bosses 19- and 20 through which extends a bore 21, these bosses forming bearings resting in the elliptical opening .8 to support the tongue in a substantially vertical position so that its upper and lower rear edges may respectively engage the lock bolt as the tongue is operated, as hereinafter described. The bore 21 is provided with a key 22 adapted to fit slidably a groove or keyway 23in the handle spindle 2 1 so that the tongue may be operated by the turning of the handle, suitable knobs 25 and 26, of course, being provided on each end of the spindle.

The manner in which the lock is fitted and operated maybe briefly described as follows.

. In placing the lock on a door a' hole is bored in the edge slightly larger in diameter and length than the cylinder 1 and in the hole I the cylinder, with the lock bolt and tongue in place, is inserted, the handle spindle having first been withdrawn. The escutcheon plates having been put on, the spindle is then passed through from side to side, the groove 23 then engaging the key 22, from which it will be seen that turning the knob will partially rotate the tongue 18 to retract the bolt 5, which is returned to its normal projected position by the spring 7 when the knob is released. ,7

From the foregoing it will be seen that we have devised a simple and inexpensivelock capable of being fitted in place quickly and easily by any person.

What we claim as our invention is 1. A latch comprising a tubular casing open at each end, and provided with upper and lower slots extending from an intermediate portion of the casing to one end of the casing, a slidable bolt member within the casing providedwith upper and lower keys operating in said slots, a cam closing the slotted end of the casing, resilient bolt proslots, and-having its. body portion cut out,

jecting means interposed between the cap and the bolt, and means for retracting the bolt against the action of said projecting means; r

2. A latch comprising a casing having upper and lower slots extending from an intermediate portionof the casing to one end of the casing, a bolt arranged in the casing to project beyond the end of the casing opposite the slotted end thereoflsaid, bolt be?v ing provided With keys operating in said intermediate the ends, a cap closing the slotted end of the casing, a spring interposed between the cap andthe adjacent end of the bolt, a, bolt operating member disposedfin the cutout portion of the bolt and including hollow side bosses supported in the sidesof said casing, and an operating spindle extending through saidbosses. V I

Dated at Vancouver, B. (I, this 1st day of December, 1919. q

' ALPHA LEON DAVENPORT.

ARTHUR J OHN JAMES; 

